Example

This is example for create RabbitMQ consumer handler in delivery layer.

RabbitMQ Consumer with delayed message feature, please add this plugin to RabbitMQ broker.

Create delivery handler

package workerhandler

import (
	"context"
	"encoding/json"
	
	"example.service/internal/modules/examplemodule/delivery/workerhandler"

	"github.com/golangid/candi/candishared"
	"github.com/golangid/candi/codebase/factory/types"
	"github.com/golangid/candi/tracer"
)

// RabbitMQHandler struct
type RabbitMQHandler struct {
	uc        usecase.Usecase
	validator interfaces.Validator
}

// NewRabbitMQHandler constructor
func NewRabbitMQHandler(uc usecase.Usecase, validator interfaces.Validator) *RabbitMQHandler {
	return &RabbitMQHandler{
		uc:        uc,
		validator: validator,
	}
}

// MountHandlers mount handler group
func (h *RabbitMQHandler) MountHandlers(group *types.WorkerHandlerGroup) {
	group.Add("example-queue", h.handleQueue) // consume queue "example-queue"
}

func (h *RabbitMQHandler) handleQueue(eventContext *candishared.EventContext) error {
	trace := tracer.StartTrace(eventContext.Context(), "DeliveryRabbitMQ:HandleQueue")
	defer trace.Finish()

	log.Printf("message consumed. message: %s\n", eventContext.Message())
	// call usecase
	return nil
}

Register in module

package examplemodule

import (
	"example.service/internal/modules/examplemodule/delivery/workerhandler"

	"github.com/golangid/candi/codebase/factory/dependency"
	"github.com/golangid/candi/codebase/factory/types"
	"github.com/golangid/candi/codebase/interfaces"
)

type Module struct {
	// ...another delivery handler
	workerHandlers map[types.Worker]interfaces.WorkerHandler
}

func NewModules(deps dependency.Dependency) *Module {
	return &Module{
		workerHandlers: map[types.Worker]interfaces.WorkerHandler{
			// ...another worker handler
			// ...
			types.RabbitMQ: workerhandler.NewRabbitMQHandler(usecaseUOW.User(), deps.GetValidator()),
		},
	}
}

// ...another method